I need help achieving the following task:
ML1200 sending 4 to 20 mA thru analog output ch0 to a DC speed controller analog input(4 to 20 mA)
my thoughts:
1) at the HMI enter a desired dc motor speed and moved it to a PLC real register1. Range 0 to 100.
2) at the PLC, scale real register1 to be from 0 to 90 vdc and store in real register 2
3) at the PLC, scale real register 2 to be from raw data for analog output 0 to 32760 and moved to PLC analog output channel 0.
is there SCP instruction for ML1200?
are the steps above correct, redundant work?
ML1200 sending 4 to 20 mA thru analog output ch0 to a DC speed controller analog input(4 to 20 mA)
my thoughts:
1) at the HMI enter a desired dc motor speed and moved it to a PLC real register1. Range 0 to 100.
2) at the PLC, scale real register1 to be from 0 to 90 vdc and store in real register 2
3) at the PLC, scale real register 2 to be from raw data for analog output 0 to 32760 and moved to PLC analog output channel 0.
is there SCP instruction for ML1200?
are the steps above correct, redundant work?